Effects of White Habiscus syriacus L. Flower Extracts on Antioxidant Activity and Bone Resorption Inhibition
2015
Lee, H.J., NIHHS, RDA, Eumseong, Republic of Korea | Lee, S.W., NIHHS, RDA, Eumseong, Republic of Korea | Park, C.G., NIHHS, RDA, Eumseong, Republic of Korea | Ahn, Y.S., NIHHS, RDA, Eumseong, Republic of Korea | Kim, J.S., NIHHS, RDA, Eumseong, Republic of Korea | Bang, M.S., Dankook University, Cheonan, Republic of Korea | Oh, C.H., Dankook University, Cheonan, Republic of Korea | Kim, C.T., Konyang University, Daejeon, Republic of Korea
In this study, we tried to offer the possibility of White Hibiscus syriacus L. (WHS) flower extracts as a preventive and improving agent of osteoporosis that bone mass reduction is induced by an decrease of osteoblast involved in bone formation and increase of bone resorption by osteoclast activity. As a results, it was found to have antioxidant activity and contain a flavonoid contents (47.74 mg/g) of the WHS flower. There was cytotoxicity at more than 250 microgram/ml concentration of WHS flower extract of RANKL-induced osteoclast in RAW264.7. There were no significant inhibited TRAP activity in the WHS leaf and stem. However, it was confirmed that it is significantly inhibited the differentiation activity of osteoclasts in 50 and 100 microgram/ml concentration of cells of stability levels of only WHS flower extracts (p 0.01). The WHS flower prominently inhibited RANKL-induced osteoclast differentiation activity by decreased calcitonin receptor and TRAP mRNA (p 0.01). These results indicate that of osteoclasts differentiation activity is inhibited by protection of oxidative stress due to the antioxidant activity of the WHS flower. Therefore, suggesting the WHS flower may be a presents the possibility as a preventive and therapeutic agents for osteoporosis.
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